Communicating-room lock.



H. G. VOIGHT.

COMMUNIGATING ROOM LOCK,

APPLIOATION FILED JUNE 21, 1911.

1,007,826. Patented Nov. 7, 1911.

H. G. VOIGHT. GOMMUNIATING ROOM LOCK.

APPLIOATION FILED JUNE 21, 1911.

1 1,007,826, Patented Nov. 7, 1911.

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HENRY G. VOIGrI-IT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO RUSSELL &ERWIN MANUFACTURING COMPANY, 0F NEW BRITAIN, CONNECTICUT, A CORPORATIONOF CONNECTICUT.

COMMUNICATING-ROOM LOCK.

Specification of Letters Patent.

Application led June 21, 1911. Serial No. 634,516.

To ad whom t may concern.'

Be it known that I, HENRY Gr. VoIGHT, a citizen of the United States,residing at New Britain, county of Hartford, State of Connecticut, haveinvented certain new and useful Improvements in Colnmunicating- RoomLocks, of which the following is a full, clear, and exact description.

My invention relates to locks and is particularly concerned with a lockadapted for use on bathroom doors where adjoining rooms of a hotel havea bathroom between them, and where the bathroom is sometimes rented withone apartment and sometimes with the other.

This invention constitutes an improvement on the construction shown inpatent to Caley No. 806,77 5, December 12th, 1905.

The object of the invention is to provide means whereby the occupant ofeach apartment can, by throwing a thumb-piece bolt from his particularside, feel absolutely sure that the door of the bathroom communicatingwith the other room is locked.

A further object of the invention is to provide a key controlled bolt toenable the proper person, for example, the bell boy or maid, to deadlockeither or both of the doors of the bathroom against operation by theguest or guests from either side or both. For example, when a bell boyconducts a guest into an apartment adjoining a bathroom which is locatedbetween two apartments, and this bathroom has been previously rented tothe party occupying the other apartment, and the thumb-piece bolt of thelock is found to be thrown from the bathroom side of the door, in suchcase by inserting his key in the lock and throwing the main bolt, thebell boy may retract the thumb bolt, and then by retracting the mainbolt open the door. Tere it notk for the fact that the key also controlsthe supplemental or thumb bolts, the bell boy would be obliged to goaround into the other apart` ment and retract the thumb bolt from thatside before he could open the door. By my improved construction thisinconvenience is avoided. Furthermore, after the bell boy has opened thedoor leading into the bathroom, he may insert his key in the other doorleading from the bathroom into the other apartment, and by throwing themain bolt and then retracting it, he may retract either one, or both, ofthe thumb bolts with which the lock is provided, if they have beenpreviously projected and this door may, if desired, be opened, or byleaving the main bolt locked this door is then securely locked againstbeing opened either from the bathroom side or from the other apartment,and can only be opened by again using the master key in the hands of themaid or bell boy, or the hotel management. In short, the control of thislock either to deadlock the door or to open it when deadlocked by eitherthumb bolt, is absolutely under the control of the pass or master key.For it is to be borne in mind, that when the main bolt is thrown by thekey, the door is etlectually blocked against being opened by a guest ineither apartment, as neither of the thumb bolts can be moved in suchcase.

With the above objects in view, the invention consists in a constructionand arrangement of parts, a preferred embodiment of which is illustratedin the accompanying drawings in which,

Figure l is a side view of the lock with Ithe cover plate removed toshow the interior mechanism. Fig. 2 is a vertical sectional view on theline 2-2, Fig. 1. Fig. 3 is a fragmentary view similar to Fig. l, showmgone of the thumb bolts in projected po-4 sition, and indicating thecontrol thereof by the main bolt. Fig. 4 comprises a side elevation andunderside view of the main bolt. Fig. 5 comprises similar views of oneof the thumb bolts. Fig. 6 comprises similar views of the companionthumb bolts. Fig. 7 is a side elevation of one of the tumblers of themain bolt. Fig. 8 comprises a side and edge view of a tumbler operatingbar for releasing the thumb bolt roll-backs from deadlocked position.Fig. 9 comprises side and edge views of the thumb bolt retracting lever.Fig. 10 comprises a side elevation and sectional view of the duplicatethumb turn roll backs, and Fig. 1l comprises a side elevation and edgeview of one of the thumb turn deadlocking releasing members. 4

In the embodiment of my invention herein selected for illustration, 1indicates the lock case, 2 the main bolt, 3 one of the thumb turn bolts,4 the companion thumb bolt, 5 the latch bolt operated by a rollback yoke6, roll back 7 and a knob spindle (not shown) by which the latch boltmay be operated by knobs from either side of the door in the usualmanner.

In Fig. 1 the parts of the lock are shown completely assembled. In Fig.3 the upper thumb turn bol-t 3 has been removed for clear illustrationof the mechanism by which the main bolt may, when projected, retracteither, or both, -of the thumb turn bolts. The thumb turn bolts, asshown in Figs. 5 and 6, respectively, are cut away or reduced inthickness at 8 and 9 respectively, thereby leaving a clearance betweenthem for the main bolt controlling mechanism. The lower thumb bolt 4 isprovided with a shoulder l() adapted to be engaged by one arm and of theoperating lever 11 pivoted at 12 upon the lock case, the upper end 13 ofwhich lever lies in the path of the controlling arm 14, extending fromthe shank of the main bolt.

When the lower thumb turn bolt is projected, the lever 11 stands in theposition indicated in full lines, Fig. 3, so that when the main boltisprojected by the master key, its arm 14 engages the arm 13 of saidlever, rotates the same, and thus retracts the lower thumb bolt 4.Likewise the upper thumb bolt 3 is provided with a shoulder l5 as shownin Fig. v5 in which figure the portion carrying shoulder 15 is shownextending upwardly for convenient illustration, although in actual use,this portion extends downward as indicated in Fig. l, to bring theshoulder 15 also in the path of the lower arm of the lever 11, wherebythis thumb bolt also is retracted by projection of the main bolt in themanner hereinbefore described.

For operation of the thumb bolts, I provide the double roll-back '(Fig.10) consisting of the independent roll-back members 1'6 and 17, each ofwhich is provided with a roll-back arm 18, which engages the usualroll-back notch 19 in its thumb bolt, and also with a cam shoulder-2Oengaged by a suitable spring pressed member 21 to hold the rollbackssecurely in their projecting or retracting positions to cause theroll-back arms 18 to dead-lock the thumb bolts in the usual mannerwell-known to those familiar with this art. In order to release thethumb bolt roll-backs from deadlocking position to permit retraction ofsaid bolts bythe main bolt,

I provide each of these spring arms with a linger 23 adapted to engage ashoulder 24 on its thumb turn roll-back, and the rear end 25 of thespring actuated lever lies in a slot -26 in the lower end of a tumblerbar 27 at the rear of the lock case, which tumbler bar has a slot 27 andis engaged at its upper end by a finger 28 formed on one of the tumblers29 (Fig. 7 coperating with the main bolt.

The keyholes in the back plate and. cover plate, respectively, of thelock case are located directly opposite each other, and the master key,for operation of the main bolt,

l this key is so bitted that, when inserted from either side, it willalways raise the tumbler 29 to operate the tumbler bar 27, and thusrelease the thumb turn roll-backs from deadlocking position by means oftheir respective levers 21, when said thumb bolts are projected.

From an examination of the dotted position (shown in Fig. 3) of the arm14 of the main bolt when projected, and of the lever 11, it will beevident that when the main bolt is projected, neither of the thumb boltscan be projected by their thumb turns, since the arm 14 blocks rotationof the lever 11, which in turn, by its engagement with the shoulders 10and 15 of the thumb bolts, blocks their forward movement. main bolt isthrown, it is impossible for a guest in either apartment to open thedoor for the reason that while the main bolt can be retracted by themaster key, it cannot be retracted by the operation of either thumbbolt. For, as will be seen from an inspection of Fig. 3, the thumb boltscannot in this case be projected since they are blocked by the lever 11in contact with their shoulders 10, and also in Contact with the arm 14of the main bolt, which bolt can only be moved after release of itstumblers from the fence post 2a and these tumblers cannot be released bythe thumb turn roll-back, since the slots 26 in the tumbler bar 27extend sufliciently far above the rear ends of the levers 25 to permitfree play of these levers, should attempt be made to rotate the rollbacks, thus the tumblers which operate the tumbler bar 27 cannot beoperated thereby by the mechanism shown. Also from an inspection of thesame figure, it will be seen that projection of the main bolt alwaysretracts either or both of the thumb bolts when projected.

While I have herein described a particular embodiment of my invention,the same may be altered in detail and relative arrangement of partswithout departing from the scope thereof.

What I claim is:

1. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs with projections foroperating said bolts, of a key-controlled bolt and means whereby saidkey-controlled bolt may be operated to retract said independent bolts.

2. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs for operating said bolts,of a key-controlled bolt and means operating when said key-controlledbolt is projected to prevent projection of said independent bolts.

3. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs for operating said boltsfrom opposite sides of a door respectively, of a key-controlled bolt andmeans whereby said key-controlled bolt may retract said pair of boltsand may preventprojection of said pair of bolts.

4. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs for operating said boltsfrom opposite sides of a door respectively, of a third locking bolt andmeans whereby said third bolt may prevent projection of said pair ofbolts.

5. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs for operating said boltsfrom opposite sides of a door respectively, of a third bolt and meanswhereby said third bolt may be operated to retract each of said pair ofbolts.

6. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding inde-pendent hubs for operating said boltsfrom opposite sides of a door respectively, of a third bolt operablefrom either side of a door, and means whereby the operation of saidthird bolt may ret-ract each of said pair of bolts.

7. In a lock mechanism, the combination wit-h a pair of independentbolts and a pair ot corresponding independent hubs for operating saidbolts from opposite sides of a door respectively, of a third lockingbolt operable from either side of a door, and means whereby said thirdbolt may prevent operation of each of said pair of bolts.

8. In a lock mechanism, the combination with a pair of independent boltsand a pair of corresponding independent hubs for operating said boltsfrom opposite sides of a door respectively, of a third bolt operablefrom either side of a door to lock said door, and means whereby saidlocking operation may cause the retraction of each of said pair ofbolts.

9. In a lock mechanism, the combination with a pair of independent boltsand a. pair of corresponding independent hubs for operating said boltsi'rom opposite sides of a door respectively, of a third bolt operablefrom either side of a door, a projection carried by said third bolt anda pivoted member located between said pair of bolts whereby when saidthird bolt is projected, said projection carried thereby may rotate saidpivoted member to retract each of said pair of bolts.

10. In a lock mechanism, the combination with a pair of independentbolts and means for operating said bolts from opposite sides of a doorrespectively, of a third bolt oper-.

able from either side of a door, an arm carried by said third bolt, alever pivoted between said pair of bolts, said arm and lever being sorelatively arranged that upon projection of said third bolt said armwill cause retraction of either or both of said pair of bolts throughsaid lever, and whereby upon projection of said third bolt said arm willprevent projection of each of said pair of bolts.

1l. In a lock mechanism, the combination of a pair of independent boltsand means for operating said bolts from opposite sides of a doorrespectively, dead-locking means for each of said pair of bolts, a thirdbolt operable from either side of a do-or and means operablewhen saidthird bolt is projected to release said dead-locking means, and meansoperable when said third bolt is projected to retract each of said pairot' bolts.

12. In a lock mechanism, the combina-tion of a pair of independent boltsand means for operating said bolts from opposite sides of a doorrespectively, dead-locking means for each of said pair of bolts, akey-controlled bolt, tumbler mechanism therefor and a connect-ionbetween said tumbler mechanism and said dead-locking means opera-blewhen said key-controlled bolt is projected to release said dead-lockingmeans, and means whereby projection of said key-controlled bolt willretract each of said pair-of bolts.

13. In a lock mechanism, the combination of a pair of independent bolts,independent means for operating said bolts from opposite lsides of adoor respectively, dead-locking means for each of said pair of bolts, akeycontrolled bolt operable from either side of a door, tumblermechanism for said key-controlled bolt and a connection between saidtumbler mechanism and said dead-locking means whereby projection of saidkey-controlled bolt may release said dead-locking means and meanswhereby projection of said key-controlled bolt may retract either orboth of said pair of bolts and may prevent projection of each of saidpair of bolts when said key-controlled bolt is projected.

HENRY G. VOIGIIT. Witnesses:

GWENDOLINE G. JACKSON,

M. S. WIARD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

